package cnf

import (
	"bytes"
	"testing"
)

func TestBashGet(t *testing.T) {

	tests := []struct {
		raw string
		key string
	}{
		{"key=value;\n", "key"},
		{"  \t key=value;\n", "key"},
		{"key=value; #comment\n", "key"},
		{"\t   key=value; #comment\n", "key"},
		{"key=value; # comment\n", "key"},
		{"\t \tkey=value; # comment\n", "key"},
	}

	for i, test := range tests {

		parser := new(bash)
		reader := bytes.NewBufferString(test.raw)

		// try to extract value
		_, err := parser.ReadFrom(reader)
		if err != nil {
			t.Errorf("[%d] parse error: %s", i, err)
			continue
		}

		// extract value
		value, found := parser.Get(test.key)
		if !found {
			t.Errorf("[%d] expected a result, got none", i)
			continue
		}

		// check value
		if value != "value" {
			t.Errorf("[%d] expected 'value' got '%s'", i, value)
		}

	}

}

func TestBashSetPathExists(t *testing.T) {

	tests := []struct {
		raw   string
		key   string
		value string
	}{

		{"key=value;\n", "key", "newvalue"},
		{"  \t key=value;\n", "key", "newvalue"},
		{"key=value; #comment\n", "key", "newvalue"},
		{"\t   key=value; #comment\n", "key", "newvalue"},
		{"key=value; # comment\n", "key", "newvalue"},
		{"\t \tkey=value; # comment\n", "key", "newvalue"},
	}

	for i, test := range tests {

		parser := new(bash)
		reader := bytes.NewBufferString(test.raw)

		// try to extract value
		_, err := parser.ReadFrom(reader)
		if err != nil {
			t.Errorf("[%d] parse error: %s", i, err)
			continue
		}

		// update value
		if !parser.Set(test.key, test.value) {
			t.Errorf("[%d] cannot set '%s' to '%s'", i, test.key, test.value)
			continue
		}

		// check new value
		value, found := parser.Get(test.key)
		if !found {
			t.Errorf("[%d] expected a result, got none", i)
			continue
		}

		// check value
		if value != test.value {
			t.Errorf("[%d] expected '%s' got '%s'", i, test.value, value)
		}

	}

}

func TestBashSetCreatePath(t *testing.T) {

	tests := []struct {
		raw    string
		key    string
		ignore string // path to field that must be present after transformation
		value  string
	}{
		{"ignore=xxx;\n", "key", "ignore", "newvalue"},
		{"unknown-line\nignore=xxx;\n", "key", "ignore", "newvalue"},
	}

	for i, test := range tests {

		parser := new(bash)
		reader := bytes.NewBufferString(test.raw)

		// try to extract value
		_, err := parser.ReadFrom(reader)
		if err != nil {
			t.Errorf("[%d] parse error: %s", i, err)
			continue
		}

		// update value
		if !parser.Set(test.key, test.value) {
			t.Errorf("[%d] cannot set '%s' to '%s'", i, test.key, test.value)
			continue
		}

		// check new value
		value, found := parser.Get(test.key)
		if !found {
			t.Errorf("[%d] expected a result, got none", i)
			continue
		}

		// check value
		if value != test.value {
			t.Errorf("[%d] expected '%s' got '%s'", i, test.value, value)
			continue
		}

		// check that ignore field is still there
		value, found = parser.Get(test.ignore)
		if !found {
			t.Errorf("[%d] expected ignore field, got none", i)
			continue
		}

		// check value
		if value != "xxx" {
			t.Errorf("[%d] expected ignore value to be '%s' got '%s'", i, "xxx", value)
			continue
		}
	}

}

func TestBashSetCreateEncode(t *testing.T) {

	tests := []struct {
		raw     string
		key     string
		value   string
		encoded string
	}{
		{"ignore=xxx;\n", "key", `"newvalue"`, "ignore=xxx;\nkey=\"newvalue\";\n"},
		{"#!/bin/bash\n\nfunc(){\n\techo \"something\";\n}\nignore=xxx;\n", "key", `"newvalue"`, "#!/bin/bash\nfunc(){\n\techo \"something\";\n}\nignore=xxx;\nkey=\"newvalue\";\n"},
	}

	for i, test := range tests {

		parser := new(bash)
		r, w := bytes.NewBufferString(test.raw), new(bytes.Buffer)

		// try to extract value
		_, err := parser.ReadFrom(r)
		if err != nil {
			t.Errorf("[%d] parse error: %s", i, err)
			continue
		}

		// update value
		if !parser.Set(test.key, test.value) {
			t.Errorf("[%d] cannot set '%s' to '%s'", i, test.key, test.value)
			continue
		}

		// check new value
		value, found := parser.Get(test.key)
		if !found {
			t.Errorf("[%d] expected a result, got none", i)
			continue
		}

		// check value
		if value != test.value {
			t.Errorf("[%d] expected '%s' got '%s'", i, test.value, value)
			continue
		}

		// writeToBuffer
		_, err = parser.WriteTo(w)
		if err != nil {
			t.Errorf("[%d] unexpected write error <%s>", i, err)
			continue
		}

		encoded := w.String()

		// check value
		if encoded != test.encoded {
			t.Errorf("[%d] wrong encoded value \n-=-=-= HAVE =-=-=-\n%s\n-=-=-= WANT =-=-=-\n%s\n-=-=-=-=-=\n", i, escape(test.encoded), escape(encoded))
			continue
		}

		// try to write
	}

}